Fire escape – ladder – or scaffold – Scaffold external of shaft
Patent
1990-10-15
1992-09-01
Chotkowski, Karen J.
Fire escape, ladder, or scaffold
Scaffold external of shaft
182133, A45C 1500
Patent
active
051431769
ABSTRACT:
A climbing apparatus which provides a mechanical means of ascending or descending any generally vertical member such as a tree to support a person when in a climbing, seated or standing position by means of two locking points of contact against the vertical member. The climbing apparatus is collapsible and compactable apparatus and may be constructed of any material that would allow sufficient physical strength to support an average person and be sufficiently light weight for a person to carry by means of backpacking.
REFERENCES:
patent: 3568797 (1971-03-01), Hardy
patent: 4337844 (1982-07-01), Hice, Sr.
patent: 4474265 (1984-10-01), Shinkle
patent: 4475627 (1984-10-01), Eastridge
patent: 4589522 (1986-05-01), Shelton
patent: 4595079 (1986-06-01), Shope
patent: 4723630 (1988-02-01), Wolford
patent: 4834217 (1989-05-01), Manes
patent: 4989766 (1991-02-01), Lewallyn et al.
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